1,000,000,000,000,000,000,000 ?
1,000 - thousand
1,000,000 - million
1,000,000,000 - bilion

how do you say 1,000,000,000,000 in English?
and 1,000,000,000,000,000?
and 1,000,000,000,000,000,000?
..................?

Question

1,000,000,000,000,000,000,000 ?
1,000 - thousand
1,000,000 - million
1,000,000,000 - bilion

how do you say 1,000,000,000,000 in English?
and 1,000,000,000,000,000?
and 1,000,000,000,000,000,000?
..................?

Answer

Hello Sally,
And the one in your question,which contains 21 zeros :
1,000,000,000,000,000,000,000 = sextillion
If you are interested, the following each number with 3 more zeros after the 1.
1,000,000,000,000,000,000,000,000 = septillion 	
1,000,000,000,000,000,000,000,000,000 = octillion
1,000,000,000,000,000,000,000,000,000,000= nonillion 1,000,000,000,000,000,000,000,000,000,000,000= decillion

Answer

Trillion          1,000,000,000,000
Quadrillion   1,000,000,000,000,000
Quintillion     1,000,000,000,000,000,000